Whisking or mixing machine.



N0. 638,830. Patented U80. I2, |899. G. S. W. K. BAKER.

WHISKING 0R MIXING MACHINE..

(Application led Dec. 51, 1897.)

8 Sheets-Sheet l.

(No Model.)

m f l l 1 I f l 1 1 1 l 1 1 1 1 n f f l l l No. 538,830. Patented nee).- l2, |899.

G. S. & W. K. BAKER. WHISKING UH MIXING MACHINE.

(Application led Dec. S1, 1897.)

(No Model.) 8 Sheets-Sheet 2.

72h/gw, y M M l 'Jfarzzy me wams FUER: co. wnorcrumo.. wAsmNaTnN. o c.

No. 638,830. Patented Dec. I2, |899. G. S. &.'W. K. BAKER. WHISKING 0B MIXING MACHINE.

(Application mld Dec. 31, 1897.)

81 Sheets-Sheet 3.

(No Model.)

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Patented Dec. I2, |899.

G. 8. w. K. BAKER. WHSKING UR MIXING MACHINE.

(Appl as un a1 dnec 31 1897) 8 Sheets-$heet 4A No Model.)

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No. 638,830. Patented Dec. I2, |899. G. S. & W. K. BAKER.

WHISKIIIG 0R MIXING MACHINE.

(Application filed Dec. 81, 1397.) (No Model.) 8 Sheets-$heet 5.4

Patented Dec. l2, |899.

G. S. W. K. BAKER.

WHISKING 0B MIXING MACHINE.

(Application med nec. s1, 1891.)

8 Sheets-Sheet 6.

(N0 Modei.)

No. 638,830. Patented Dec. I2, |899.

E. S. & W. K. BAKER.

WHISKING 0R MIXING MACHINE.

(Application led Dac. 31, 1897.) (No Nudel.) 8 Sheets-Sheet 7.

No. 638,830. Patented Dec. I2, |899. G. S. & W. K. BAKER.

WHISKING 0R MIXING MACHINE.

(Application filed Dec. 81, 1897.1

(No Model.)

ma Nonms Pneus co., moro-uma.. WASHINGTON. I1'A c.

v prove their construction and permit of the NITED STATES PATENT EEIIOE.

GEORGE SAMUEL BAKER ANI) WILLIAM KING BAKER, OF LONDON,

ENGLAND.

WI-IISKING OR MIXING MACHINE.

SPECIFICATION forming part of Letters Patent No. 638,830, dated December 12, 1899.

Application led December 31,1897.

To a/ZZ whom it may concern/.-

Be it known that we, GEORGE SAMUEL BAKER and WILLIAM KING BAKER, subjects of the Queen of England, residing at London, England, have invented certain new and useful Improvements in Whisking or Mixing Machines, (for which we have obtained Letters Patent in Great Britain, No. 20,972, dated November 4, 1893,) of which the following is a specification.

This invention relates to whisking or mixing machines; and it has for its object to imwhisks being readily removed from the machine and as readily replaced in position.

The invention will be best understood by reference to the accompanying drawings, in which` Figure l is a sectional plan of the complete apparatus constructed according to this invention, Fig. 2 being a sectional end view on the line 2 2 of Fig. l, and Fig. 3 an end view looking from the line 3 3 of Fig. l. Fig. 4 is a plan, and Fig. 5 a sectional end view, of a modification, Fig. 6 being a sectional end view of a further modification. Fig. 7 is an end view looking from the left-hand side of Fig. A. Fig. 8 is a front sectional elevation of a modified construction. Fig. 9 is an end elevation looking at the left-hand side of Fig. S. Fig. l0 is a sectional plan of the driving mechanism. Fig. ll is an end sectional view of the latter on the line l1 1l of Fig. 10, looking in the direction of the arrow.

Like letters represent like parts throughout the drawings.

In the form shown in Figs. l, 2, and 3, A represents the pan, made of metal or other suitable material, carried upon trunnions A in the framework of the machine, the framework being of any suitable construction and design. By this means the pan can be tilted for the purpose of emptying the contents, the locking-bar A2, pivoted upon the framework at A3 and having the projection or bolt A4, engaging with the lug A5 (or pref erably between two lugs) and pressed therein by the spring A6, serving to hold the pan in position. To release the pan for the pur- Serial No. 665,15 9. (No model.)

rpose of turning it, the locking-bar A2 is withdrawn against the pressure of its spring A, the bolt A4 being thus released from the lug or lugs A5, When the pan is free to turn upon its trunnions. In this figure three concentric whisks B, C, and D are shown. Of these B and D rotate in the same direction and at the same speed, while C rotates in the opposite direction, preferably at a faster speed. The whisk B is carried upon the shaft B', suitably journaled in the frame and having a stuffing-box B2 to make a tight joint around the shaft. A portion of the shaft is squared at B3, fitting into a square recess in the boss of whisk B, (or the two parts are otherwise arranged so as to turn together, while being capable of being separated,) so that B revolves with the shaft B', which terminates at B4, the boss D of the whisk D being connected to the shaft BX, (extending from B4 to B8,)-say by a pin D2a similar boss D and pin D2 at the other end of D connecting that end also with the shaft BX, (whose endat B4 is connected to the whiskB by the pin B9, passing through BX, and the boss B10 of the .whisk B,) so that both B and D are connected and drivenvby the shaft B. The whisk C has its boss C resting loosely upon the shaft B between the whisks B and D, while at the other end a second boss C2 is connected, as by a pin C3, with a short sha-ft E, terminating in a head or cup E', having a square socket into which fits the square end F of the short shaft F, carried in suitable bearings in the framework and provided with a stuffing-box F2. Upon the shaft F is a spur-pinion F3, in which the shaft F can slide, the pinion being carried around with the shaft by the feather F4 or by other suitable means. The spur-pinion F3 is driven by the spur-wheel F5 from the shaft Gr, which drives the whole apparatus, receiving its power by belt and' pulleys or otherwise. Thus it will be seen that the wheel F5 drives the pinion F3, the shaft F through its squared end F turning the short shaft E, which carries one end of the whisk C and drives it, while the shaft B carries and drives the two whisks B and D in the opposite direction to the whisk G. The shaft B' is driven by the spur-pinion H, with which gears a similar pinion or idle wheel H', driven in its turn by the spur-wheel H2, carried by the shaft G, the object of the idle wheel H being to reverse the motion of the shaft B, and thus cause the whisks B and D to revolve in the opposite direction to that of the whisk C. Other gearing, however, may be employed for this purpose.

It will be seen that if the square F of the shaft F and the square Bs of the shaft B be withdrawn from their respective sockets the whole of the three whisks can be lifted out of the pan for cleaning, giving access to the pan, or for other purposes. This is effected in the following manner: The shaft B is free to slide in the spur-pinion H, being carried round therewith by the feather B5, the sliding movement being imparted by the sleeve I, carried upon the reduced portion B6 of the shaft B' and retained by the collar B7 upon the end of the shaft B6. The sleeve I has formed in its outer periphery or surface a spiral or similar groove l', with which engages a stud or projection J, iixed in the framework of the machine. The sleeve has a hand-wheel I2 or equivalent device by which it can be turned, and it will be readily seen that when the sleeve is turned the fixed stud J, engaging in the spiral groove I, causes the sleeve as it revolves to travel inward or outward, according to the direction in which it is revolved, taking with it the shaft B, and either withdrawing it from the squared socket in the whisk B or replacing it in that socket. The shaft F at the other end of the machine is operated by similar means and. in a similar manner, so that the whisks can be easily removed and replaced.

The positions of the groove I' and stud J can be reversed, the projection being upon the sleeve and the recess in the framework or bearing, or an ordinary or special screwthread can be employed. If desired, we may couple the two grooved sleeves together, so that they may be simultaneously operated.

In the modification shown in Fig. 4 the same arrangements for withdrawing the axles at one end of the machine by means of the helical sleeve-stud and hand wheels are adopted 5 but as in this case only one whisk is carried upon each shaft, the whisks lying in separate vertical planes, the whisks are carried at their other ends upon screwed studs or centers K, Fig. 4, screwing into bosses A9 and A10 upon the outsideV of the pan A. These studs may be operated by hand-wheels K' upon their outer ends, the object in both cases being the same-viz., to withdraw the supporting-shafts so as to allow of the whisks being withdrawn.

In the arrangement shown in Figa-t and 5 the whisks are carried in the same horizontal plane, but in separate vertical planes, and are driven by gearing at the same speed, but are set with their working faces at right angles to each other, so that when one whisk lies horizontally the other lies vertically, and they are thus prevented from touching or interfering with each other. The gearing by which this is accomplished is substantially the same as that shown in Figs. l and 2, excepting that the two spur-pinions H and H lie in the same horizontal plane. They are driven by the spur-wheel H2, as previously described, and the whisks revolved in opposite directions. The arrangement of the gearing is clearly shown in Fig. 7. The pan A may be tilted, as before, around the axis B', the bearings of the second whisk in Fig. It being carried by the pan, so that it can be lifted with the pan when the latter is tilted in the direction of the arrow A7, Fig. 5, for the purpose of emptying the contents, the axle L of Fig. 5 moving in a circular arc about the center B.

Fig. 6 is in most respects the same as Figs. 4 and 5 5 but each whisk instead of projecting upon both sides of its axle projects upon one side only, their proper relative positions being insured by gearing similar to that elnployed in Fig. l, and the pan tilting as described with reference to Fig. 5.

The end view, Fig. 7, shows the arrangement of the gearing adopted in Figs. 4, 5, and 6. plished in the manner already described with reference to Fig. l 5 but for convenience a spring-controlled sliding locking-bolt M, carried on the framework of the machine, is employed, through an opening M' in which the locking-bar A2 passes. The point M' of the bolt M engages with a projection A8 upon the boss A11 of the pan A. The operation of the locking device is the same as that already described in reference to Figs. 1 and 2.

In the alternative construction shown in Figs. S to 1l a more compact method of gear- The locking of the pan A is accom- ICO ing the machine and of tilting the body of the machine for the purpose of discharging the content-s is adopted. In this modification a device for dropping eggs or other materials intermittingly into the body of the machine is added. The main drivin g-shaftN is placed beneath the body of the machine, running longitudinally, and beside this and parallel with it is a second motion-shaft O. The end of the shaft N runs in a sleeve N, upon which is mounted a pinion N2 and fast and loose pulley-wheels N3 and N4. The shaft N also carries a clutch member Q, which rotates with the shaft owing to the feather Q', but can be moved longitudinally, so as to be engaged with or disengaged from the other portion of the clutch N5 upon the end of the sleeve N. The end of the shaft O passes through a sleeye O', upon which is keyed a toothed wheel O2, the sleeve being formed at one end with a clutch member O3, with which can engage the clutch member R. The latter, owing to the feather R, rotates with the shaft O, but can be moved longitudinally thereon. The toothed IIO belt rests upon the fast pulley N4. A twoarmed lever' S engages at its ends with annular grooves Q2 R2 in the cluthes Q and R, respectively. The lever S is pivoted about its center upon a shaft S', upon the lower end of which is a bevel-wheel S2. The latter gears with a bevel-wheel T, mounted upon a shaft T', which carries upon its end a hand-lever T2. This lever is provided with a spring-detent T3, which can be caused to engage with a toothed quadrant T4. By moving the lever T2 the shaft T will be partially rotated, and consequently the shaft S', with the result that the lever S will be moved one way or the other, so as to throw one of the clutches R and Q into engagement with one or the other of the sleeves N' O', and thus cause either the shaft O or the shaftN to be driven direct from the driving-sleeve N. The shaft O carries at the end opposite to that which carries the sleeve O a pinion O4, which engages with a toothed wheel N6 on the corresponding end of the shaft N. When the lever T2 is moved so as to throw the clutch R into gear with the sleeve O', the shaft N, and consequently the toothed wheel N6, will be rotated with a slow movement; but if the clutch Q is thrown into engagement with the sleeve N' the toothed wheel N6 will rotate with and at the same speed as the sleeve N'.

For certain classes of cake it is necessary after the butter and sugar have been beaten up together (or creamed) to add the necessary eggs gradually, so as to make a light mixture and to prevent its curdling. For this purpose upon the top of the casingA is formed a bowl A12, with an opening in the bottom leading into the casing. Above this bowl is mounted on a suitable support a bowl Y, in the bottom of which is an oriiice whichis closed by a sliding shutter Y', carried upon the end of aA pivoted arm Y2. The end of this arm lies adjacent to the face of a toothed wheel Z. A pin Z' upon the face of this wheel is so arranged that as the wheel rotates this pin will come in contact with the end of the arm Y2 and move the latter, and consequently the slide Y', so as to open the orifice at the bottom of the bowl Y for a brief space, sufficient to allow a small quantity of the contents of the bowl Y to pass into the bowl A172 and thence into the casing A, where it is mixed with the materials already placed therein. The slide Y' is controlled by the spring Ys, so that as soon as the pin Z' has passed the slide will be brought back to its normal position, so as to close the opening in the bottom of the bowl Y. The toothed wheel Z gears with a worm Z2 on a shaft Z3, which carries a pulleywheel Z4, around which passes a band, (not shown in the drawings,) which also passes around an annular groove N7 on the sleeve N'. The bowl Y has a lid Y4, which can be clamped in position by screws Y5. When the mixture is complete, the body or drum 01":k the machine maybe tilted upon its trunnionsand the contents discharged into a vessel prepared for its reception, as in the other construction. In this modification the tilting is accomplished by the following mechanism: Upon the end of the casingA is mounted a segmental rack W, with which engages a worm W', carried upon a shaft V72. W'ith this worm meshes a bevel-gear carried by a shaft X', which latter is rotated by means of the hand-wheel X.

The whisks are removably mounted in the casingA in the manner shown and described above with reference to the construction illustrated in Fig. et.

The shafts carrying the whisks are provided at one end with toothed wheels U and V, meshing together, the former of which meshes also with the toothed Wheel N6, the whisks being arranged in this construction as in the construction illustrated iu Fig. 5.

'We claiml. In a whisking or mixing machine, the combination of a casing, beaters removably mounted within the casing, mechanism for rotating the beaters in opposite directions, mechanism for tilting the casing while the beaters are in operation and mechanism for intermittently introducing material into the casing as set forth.

2. In a whisking or mixing machine, the combination of a casing, beaters mounted within the casing, mechanism for rotating the beaters and mechanism for introducing material into the casing.

3. In a whisking or mixing machine, the combination with the casing, beaters mounted within the casing, mechanism for rotating the beaters at different rates of speed, and mechanism for introducing material into the casing.

4. In a whisking or mixing machine, the combination with the casing, of the beaters mounted therein, the lon gitudinally-movable shafts j ournaled in the side of the casing having the squared ends for engaging the hubs of the beaters, the sleeve carried by the shaft having the spiral groove therein, the pin on the casing engaging said groove,and the handwheel for turning said sleeve, whereby as the sleeve is turned, the shaft will be moved; substantially as and for the purpose set forth.

5. In a whisking or mixing machine, the combination with the casing having the opening in the top thereof, the beaters mounted in said casing, the bowl or hopper suitably supported above the casing and having an opening in the bottom, the slide for closing said orifice and mechanism for operating said slide intermittently, whereby the contents of the bowl may be discharged into the casing; substantially as described.

6. In a whisking or mixing machine, the combination with the casing having the opening in the top, the beaters mounted in the casing, the bowl or receptable suitably mounted above the casing, having the orifice in the bottom thereof, the slide for closing the ori- IOS IIO

fiee, carried upon the pivoted arm, the wheel 'carrying the pin adapted to strike the arm and move the slide, and means for turning Jche wheel, and' the spring for returning Jche I 5 slide to close the orifice in the bowl; substannially as and for the purpose set forth.

In testimony whereof we have hereto set our hands in the presence of the two Subsoriling witnesses.

GEORGE SAMUEL BAKER. WILLIAM KING BAKER. VitneSSes:

ALFRED J. BoULT, HARRY B. BRIDGES. 

